Return a formatted string
$format
$args
Operates as sprintf but accepts an array of arguments, rather than a variable number of arguments.
format
See sprintf for a description of format.
args
Return array values as a formatted string according to format (which is described in the documentation for sprintf).
Example #1 vsprintf: zero-padded integers
<?phpprint vsprintf("%04d-%02d-%02d", explode('-', '1988-8-1')); // 1988-08-01?>